HAZARD 4 Combat Seal(TM) Fleece Lycra Rashguard by (R) Fuzzy velcro panels on arms for modular patches - this saves money; swap patches as shirts get washed. Fuzzy velcro panels on chest for name tape & larger patches; Our lycra is highly UV-cut rated to prevent sun burn. Front hem loop (tie into swim trunk string to prevent rising); Elastic loop at the thumbs to keep the sleeves from rising up. Total blind-stitching for flat seams and no chafing; Extra comfortable lycra interior for cold conditions/wind. Sizes: S/M/L/XL/2XL; Main Material: UV-Protection Fuzzy Lycra.